chr10-17127827-A-G

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1_ModeratePP5_Very_Strong

The NM_001081.4(CUBN):c.348+2T>C variant causes a splice donor, intron change. The variant allele was found at a frequency of 0.00021 in 1,607,690 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00022 ( 0 hom. )

Consequence

CUBN
NM_001081.4 splice_donor, intron

Scores

Splicing: ADA: 0.9648

Clinical Significance

Likely pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 6.56

Publications

4 publications found

Variant links:

Genes affected

CUBN (HGNC:2548): (cubilin) Cubilin (CUBN) acts as a receptor for intrinsic factor-vitamin B12 complexes. The role of receptor is supported by the presence of 27 CUB domains. Cubulin is located within the epithelium of intestine and kidney. Mutations in CUBN may play a role in autosomal recessive megaloblastic anemia. [provided by RefSeq, Jul 2008]

CUBN Gene-Disease associations (from GenCC):

Imerslund-Grasbeck syndrome type 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Laboratory for Molecular Medicine
proteinuria, chronic benign
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
Imerslund-Grasbeck syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CUBN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.008830022 fraction of the gene. No cryptic splice site detected. Exon removal is inframe change.

PP5

Variant 10-17127827-A-G is Pathogenic according to our data. Variant chr10-17127827-A-G is described in CliVar as Likely_pathogenic. Clinvar id is 572384.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr10-17127827-A-G is described in CliVar as Likely_pathogenic. Clinvar id is 572384.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr10-17127827-A-G is described in CliVar as Likely_pathogenic. Clinvar id is 572384.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CUBN	NM_001081.4 link	c.348+2T>C		splice_donor_variant, intron_variant	Intron 3 of 66	ENST00000377833.10	NP_001072.2	O60494
CUBN	XM_011519708.3 link	c.348+2T>C		splice_donor_variant, intron_variant	Intron 3 of 54		XP_011518010.1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
CUBN	ENST00000377833.10 link	c.348+2T>C	splice_donor_variant, intron_variant	Intron 3 of 66	1	NM_001081.4	ENSP00000367064.4	O60494
CUBN	ENST00000433666.5 link	c.9+2T>C	splice_donor_variant, intron_variant	Intron 1 of 4	5		ENSP00000415970.1	H7C480
CUBN	ENST00000377823.1 link	n.387+2T>C	splice_donor_variant, intron_variant	Intron 3 of 4	3

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00230

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000147

AC:

AN:

251198

AF XY:

0.000118

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00189

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000132

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000220

AC:

320

AN:

1455470

Hom.:

Cov.:

AF XY:

0.000221

AC XY:

160

AN XY:

724576

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33360

American (AMR)

AF:

0.0000447

AC:

AN:

44698

Ashkenazi Jewish (ASJ)

AF:

0.00188

AC:

AN:

26092

East Asian (EAS)

AF:

0.00

AC:

AN:

39626

South Asian (SAS)

AF:

0.00

AC:

AN:

86102

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53324

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5754

European-Non Finnish (NFE)

AF:

0.000226

AC:

250

AN:

1106314

Other (OTH)

AF:

0.000316

AC:

AN:

60200

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.456

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000112

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74366

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41458

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00230

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000298

Hom.:

Bravo

AF:

0.000147

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000124

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000178

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Imerslund-Grasbeck syndrome type 1;C5394384:Proteinuria, chronic benign

Pathogenic:1

Jan 30, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Pathogenic:1

Jun 23, 2022

Revvity Omics, Revvity

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Imerslund-Grasbeck syndrome

Pathogenic:1

Oct 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change affects a donor splice site in intron 3 of the CUBN gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in CUBN are known to be pathogenic (PMID: 15024727, 22929189, 25349199, 31613795, 34979989). This variant is present in population databases (rs146047781, gnomAD 0.2%). Disruption of this splice site has been observed in individual(s) with steroid-resistant nephrotic syndrome (PMID: 25349199). ClinVar contains an entry for this variant (Variation ID: 572384). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.47

BayesDel_noAF

Uncertain

0.12

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Uncertain

0.97

PhyloP100

6.6

GERP RS

5.4

PromoterAI

-0.096

Neutral

(source)

Mutation Taster

=2/98

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.96

dbscSNV1_RF

Benign

0.57

SpliceAI score (max)

0.63

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.63

Position offset: 2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over